Node Proximity Verification via Timing Parameters
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Solution Overview
Problem
Network security is compromised by the inability to effectively distinguish between local and remote nodes, leading to potential unauthorized access, as existing systems lack a reliable method to verify the proximity and authenticity of nodes.
Innovation Solution
A node-verification protocol using timing parameters within the Open Copy Protection System (OCPS) that determines proximity by measuring the time required for a query-response sequence, integrating this with a key-exchange process to authenticate nodes and verify the authenticity of processing time, thereby differentiating between local and remote nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If stringent security measures are imposed on remote nodes, then network security is enhanced, but device complexity increases
Solution Approach 1:
The patent applies local quality by differentiating between local and remote nodes and applying different security measures to each. Local nodes (within physical environment) receive standard access, while remote nodes (outside physical environment) receive stringent security measures. This resolves the contradiction by tailoring security complexity to the specific context of each node rather than applying uniform high security to all nodes.
Solution Approach 2:
The patent uses timing parameters as an intermediary mechanism to distinguish between local and remote nodes. By measuring the time required for query-response sequences and comparing it against threshold values, the system indirectly determines node proximity and applies appropriate security measures accordingly, avoiding the need for direct complex physical detection.
2Measurement precision
If timing parameters are used to determine node proximity, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent performs preliminary timing measurements during the node verification process to determine proximity before establishing full communication. By measuring the time required for query-response sequences and processing operations in advance, the system classifies nodes as local or remote, enabling subsequent security measures to be applied efficiently without repeated time-consuming measurements.
Data Source
AI summary
A system and method includes timing parameters within a node-verification protocol, such as OCPS, to facilitate a determination of the proximity of a target node to a source node. The node-verification protocol includes a query-response sequence, wherein the source node communicates a query to the target node, and the target node communicates a corresponding response to the source node. The source node establishes a lower bound on the distance between the source node and the target node based on a measure of the time required to effect this query-response sequence. The time required to effect this sequence includes the time required to communicate the query and response, as well as the time required to process the query and generate the response. The target node includes a measure of the time required to process the query and generate the response to the source node. The source node subtracts this time from the total query-response time to determine the time consumed for the communication. This communication time is compared to a threshold value to determine whether the target node is local or remote relative to the source node.